1 The fader was changed during but the serial number of the
change is unknown. Check inside the console, if the faders
are individually mounted then the faders are shown on the
early consoles line, otherwise the faders are shown on the
late console line!

2 If the serial number is
near the one shown check with Avolites to ensure you are
ordering the correct fader, or check the PCB which mounts
the faders if it is 1201-4750A then the console is a type A
if the console uses a pcb type 1201-4750B then the console
is type B